Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/serial/mtk-uart.txt
Version:
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1 * MediaTek Universal Asynchronous Receiver/Transmitter (UART) 2 3 Required properties: 4 - compatible should contain: 5 * "mediatek,mt2701-uart" for MT2701 compatible UARTS 6 * "mediatek,mt2712-uart" for MT2712 compatible UARTS 7 * "mediatek,mt6580-uart" for MT6580 compatible UARTS 8 * "mediatek,mt6582-uart" for MT6582 compatible UARTS 9 * "mediatek,mt6589-uart" for MT6589 compatible UARTS 10 * "mediatek,mt6755-uart" for MT6755 compatible UARTS 11 * "mediatek,mt6765-uart" for MT6765 compatible UARTS 12 * "mediatek,mt6779-uart" for MT6779 compatible UARTS 13 * "mediatek,mt6795-uart" for MT6795 compatible UARTS 14 * "mediatek,mt6797-uart" for MT6797 compatible UARTS 15 * "mediatek,mt7622-uart" for MT7622 compatible UARTS 16 * "mediatek,mt7623-uart" for MT7623 compatible UARTS 17 * "mediatek,mt7629-uart" for MT7629 compatible UARTS 18 * "mediatek,mt7986-uart", "mediatek,mt6577-uart" for MT7986 compatible UARTS 19 * "mediatek,mt8127-uart" for MT8127 compatible UARTS 20 * "mediatek,mt8135-uart" for MT8135 compatible UARTS 21 * "mediatek,mt8173-uart" for MT8173 compatible UARTS 22 * "mediatek,mt8183-uart", "mediatek,mt6577-uart" for MT8183 compatible UARTS 23 * "mediatek,mt8186-uart", "mediatek,mt6577-uart" for MT8183 compatible UARTS 24 * "mediatek,mt8192-uart", "mediatek,mt6577-uart" for MT8192 compatible UARTS 25 * "mediatek,mt8195-uart", "mediatek,mt6577-uart" for MT8195 compatible UARTS 26 * "mediatek,mt8516-uart" for MT8516 compatible UARTS 27 * "mediatek,mt6577-uart" for MT6577 and all of the above 28 29 - reg: The base address of the UART register bank. 30 31 - interrupts: 32 index 0: an interrupt specifier for the UART controller itself 33 index 1: optional, an interrupt specifier with edge sensitivity on Rx pin to 34 support Rx in-band wake up. If one would like to use this feature, 35 one must create an addtional pinctrl to reconfigure Rx pin to normal 36 GPIO before suspend. 37 38 - clocks : Must contain an entry for each entry in clock-names. 39 See ../clocks/clock-bindings.txt for details. 40 - clock-names: 41 - "baud": The clock the baudrate is derived from 42 - "bus": The bus clock for register accesses (optional) 43 44 For compatibility with older device trees an unnamed clock is used for the 45 baud clock if the baudclk does not exist. Do not use this for new designs. 46 47 Example: 48 49 uart0: serial@11006000 { 50 compatible = "mediatek,mt6589-uart", "mediatek,mt6577-uart"; 51 reg = <0x11006000 0x400>; 52 interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>, 53 <GIC_SPI 52 IRQ_TYPE_EDGE_FALLING>; 54 clocks = <&uart_clk>, <&bus_clk>; 55 clock-names = "baud", "bus"; 56 pinctrl-names = "default", "sleep"; 57 pinctrl-0 = <&uart_pin>; 58 pinctrl-1 = <&uart_pin_sleep>; 59 };
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